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Nodemaks can be seen as classification-tags in !OpenSceneGraph. Every Node in a file has a Nodemask. Usually this is the default mask, specified in the OSG Exporter-options dialog, but special ones can be used as well, using the Nodemask Helper.

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== Possible uses: ==

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* You can use the Helper to specifically designate parts of your scene as blocked, using a Collision Mask

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* Or explicitly let an object be walked through (using a no-collision mask).

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== To create a Nodemask Helper in 3d Studio Max ==

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* Create some geometry;

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* Add an OSG Nodemask Helper object to your scene;

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* Using the 'Add' of 'Add multiple'-butons add the geometry to the Helper;

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* Specify the type of Mask you want to assign;

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* Export using the OSG Exporter.

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[[Image(OSGNodeMaskRollout.png)]]

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The options for the !NodeMask Helper

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== Other options ==

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1. !NodeMask Value: This allows you to specify the type of Nodemask.

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* Terrain: makes this geometry part of the terrain (it can be walked upon);

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* Collision: make the object impenetrable;

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* No Collission: makes the object penetrable;

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* Custom mask: allows you to create special categories. Only usable if your viewer support this functionality;

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2. !NodeMask Geometry: Add of remove pieces of geometry from this Nodemask Helper.